| Message ID | 20220401141124.27272-1-ulf.hansson@linaro.org |
|---|---|
| Headers | show |
| Series | PM: runtime/cpuidle: Improve suspend-to-ram support for cpuidle-psci | expand |
On Fri, Apr 1, 2022 at 4:11 PM Ulf Hansson <ulf.hansson@linaro.org> wrote: > > Maulik Shah reported a problem with suspend-to-ram for one of the Qualcomm > platforms that is using PSCI OSI mode. Briefly described, the genpd on/off > notifiers doesn't get sent when the boot CPU is turned on/off, which prevents > the needed platform specific operations to be executed. > > This series intends to solve these problems. > > Note that, I have tested this on Dragonboard 410c, with some local hacks to the > PSCI firmware driver. This was needed because the PSCI firmware didn't support > SYSTEM_SUSPEND, so I basically made psci_system_suspend_enter() to call > cpu_do_idle() and forced a suspend ops to be registered. > > Maulik, can you please test this at your setup? > > Kind regards > Ulf Hansson > > > Ulf Hansson (2): > PM: runtime: Allow to call __pm_runtime_set_status() from atomic > context > cpuidle: psci: Improve support for suspend-to-ram for PSCI OSI mode > > drivers/base/power/runtime.c | 9 ++++--- > drivers/cpuidle/cpuidle-psci.c | 46 ++++++++++++++++++++++++++++++++++ > 2 files changed, 51 insertions(+), 4 deletions(-) Both patches applied as 5.19 material (in the PM-sleep category, because they really are system-wide suspend support material). Thanks!
Maulik Shah reported a problem with suspend-to-ram for one of the Qualcomm platforms that is using PSCI OSI mode. Briefly described, the genpd on/off notifiers doesn't get sent when the boot CPU is turned on/off, which prevents the needed platform specific operations to be executed. This series intends to solve these problems. Note that, I have tested this on Dragonboard 410c, with some local hacks to the PSCI firmware driver. This was needed because the PSCI firmware didn't support SYSTEM_SUSPEND, so I basically made psci_system_suspend_enter() to call cpu_do_idle() and forced a suspend ops to be registered. Maulik, can you please test this at your setup? Kind regards Ulf Hansson Ulf Hansson (2): PM: runtime: Allow to call __pm_runtime_set_status() from atomic context cpuidle: psci: Improve support for suspend-to-ram for PSCI OSI mode drivers/base/power/runtime.c | 9 ++++--- drivers/cpuidle/cpuidle-psci.c | 46 ++++++++++++++++++++++++++++++++++ 2 files changed, 51 insertions(+), 4 deletions(-)